---
product_id: 724974947
title: "AC Infinity Inline Duct Fan Silencer, 4\" Noise Reduction Muffler, Blower Silencer for Indoor Hydroponic Tent Ventilation System"
brand: "ac infinity"
price: "€ 23.48"
currency: EUR
in_stock: false
url: https://www.desertcart.fi/products/724974947-ac-infinity-inline-duct-fan-silencer-4-noise-reduction-muffler
store_origin: FI
region: Finland
---

# 50% noise reduction 4" duct diameter corrosion-resistant steel AC Infinity Inline Duct Fan Silencer, 4" Noise Reduction Muffler, Blower Silencer for Indoor Hydroponic Tent Ventilation System

**Brand:** ac infinity
**Price:** € 23.48
**Availability:** ❌ Out of Stock

## Summary

> 🔇 Silence your space, amplify your focus.

## Quick Answers

- **What is this?** AC Infinity Inline Duct Fan Silencer, 4" Noise Reduction Muffler, Blower Silencer for Indoor Hydroponic Tent Ventilation System by ac infinity
- **How much does it cost?** € 23.48 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/724974947-ac-infinity-inline-duct-fan-silencer-4-noise-reduction-muffler)

## Best For

- ac infinity enthusiasts

## Why This Product

- Trusted ac infinity brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Endure:** Galvanized steel body resists corrosion and extreme temps for lasting performance.
- • **Optimize Your Space:** Create a distraction-free environment in your grow tent, bathroom, or server closet.
- • **Versatile Installation:** Fits perfectly between fan and duct in hydroponic tents, HVAC, or home setups.
- • **Seamless Sound Absorption:** Dual aluminum flanges absorb vibration noise for ultra-smooth airflow.
- • **Whisper-Quiet Ventilation:** Cut fan noise by half with premium eggcrate neoprene foam.

## Overview

The AC Infinity Inline Duct Fan Silencer is a 4-inch noise reduction muffler designed to cut fan noise by up to 50% using high-quality eggcrate neoprene foam and dual aluminum flanges. Its galvanized steel body ensures corrosion resistance and durability under extreme temperatures. Ideal for hydroponic tents, HVAC systems, and home ventilation, it fits seamlessly between inline fans and ducts to create a quieter, more comfortable environment.

## Description

Product description               Product Description Ventilation duct tool designed to attenuate or reduce noise generated from the airflow of the ventilation system in your glow tent or server closet. Made of premium neoprene foam with ripple pattern that reduces sound movement and reduces noise pollution by up to 50%. Eggcrate foam eliminates sound vibrations while allowing maximum airflow through both intake and exhaust configurations. Both aluminum flange openings absorb sound waves caused by vibrations and fit seamlessly into the flange of the inline duct fan. Each silencer is constructed with a sturdy galvanized steel body that is corrosion resistant and can withstand extreme temperature changes. Application Duct silencers are often paired with inline extraction fans for cultivation tents and hydroponic rooms. Can be installed anywhere on the ventilation system chain, such as between fan and duct. The silencer can also be used for many household HVAC applications such as cooling air in your A/V equipment, cooling your closet, and ventilation in your bathroom. This creates a quiet, relaxing and comfortable home environment or a distracted workplace.                   Directions               1.Install the duct silencer anywhere on the ventilation system chain (between fan and duct) 2.Make sure the aluminum flange opening of the silencer fits the flange of the inline duct fan and absorbs sound waves caused by vibration               
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                        Safety Warning               Do not use with extension cord, operate wet, keep out of reach of children, disassemble or modify Follow all local electrical codes             See more

## Features

- Duct muffler designed for glow tents, bathroom fans and other inline fans of HVAC applications
- Features dual aluminum flanges to absorb sound waves caused by fan vibration and air flow
- High quality neoprene foam with egg box pattern reduces fan noise by up to 50%
- Galvanized steel body resists corrosion and withstands extreme temperatures
- Duct Opening Diameter: 4" | Length: 15" | Weight: 2.2 lbs (1.0 kg)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | AC Infinity |
| Brand | AC Infinity |
| Package Dimensions | 40.6 x 20.1 x 19.3 cm; 1.04 kg |
| Item model number | AC-DSA4 |
| Item Weight | 1.04 Kilograms |

## Product Details

- **Brand:** AC Infinity
- **Item Weight:** 2.3 Pounds
- **UPC:** 819137021051
- **Manufacturer:** AC Infinity
- **Global Trade Identification Number:** 00819137021051

## Images

![AC Infinity Inline Duct Fan Silencer, 4" Noise Reduction Muffler, Blower Silencer for Indoor Hydroponic Tent Ventilation System - Image 1](https://m.media-amazon.com/images/I/51AYf5JWdAL.jpg)
![AC Infinity Inline Duct Fan Silencer, 4" Noise Reduction Muffler, Blower Silencer for Indoor Hydroponic Tent Ventilation System - Image 2](https://m.media-amazon.com/images/I/61bCcwazKEL.jpg)
![AC Infinity Inline Duct Fan Silencer, 4" Noise Reduction Muffler, Blower Silencer for Indoor Hydroponic Tent Ventilation System - Image 3](https://m.media-amazon.com/images/I/61RE0By2H6L.jpg)
![AC Infinity Inline Duct Fan Silencer, 4" Noise Reduction Muffler, Blower Silencer for Indoor Hydroponic Tent Ventilation System - Image 4](https://m.media-amazon.com/images/I/61wAniwlO7L.jpg)
![AC Infinity Inline Duct Fan Silencer, 4" Noise Reduction Muffler, Blower Silencer for Indoor Hydroponic Tent Ventilation System - Image 5](https://m.media-amazon.com/images/I/61HgnA0jqoL.jpg)

## Questions & Answers

**Q: does this get installed before the fane for after the Fan and how far?**
A: I've installed one before and one after - directly on the fan.  I ultimately returned the one before the fan because the improvement was relatively minor.

**Q: Can you connect these mufflers in series? And what impact does that have?  e.g. one reduces 50% two reduces 75% ... and so forth?**
A: I don’t think they can be used end to end but you can put one on either side of the fan and that should reduce the sound.... or if you’d like you can put one directly against the fan and then add another one at the end of a duct as well. I can’t give you any specific numbers though.

**Q: Can I simple insert this silencer (not fan) before my output in my home music studio?**
A: The openings on each side is 4" in diameter. 
I'm not sure exactly what your affixing this to but if it's similar to any duct opening you'll need a clamp or coupler. Hope this helps!

**Q: Will this work on a radon fan system?**
A: i dont know about a radon but ive used a hyperfan and it fits perfect. ive also used one of those cheap vivosun ones with the red fan blades and it is about a quarter inch smaller than the flange on th muffler. it does work well though.

## Frequently Bought Together

- AC Infinity Inline Duct Fan Silencer, 4" Noise Reduction Muffler Blower Silencer for Indoor Hydroponics Grow Tent Ventilation Systems
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- AC Infinity CLOUDLINE PRO T4, Quiet 4” Inline Duct Fan with Temperature Humidity VPD Controller, WiFi Integrated App Control - Ventilation Exhaust Fan for Heating Cooling, Grow Tents, Hydroponics

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**Shop now:** [https://www.desertcart.fi/products/724974947-ac-infinity-inline-duct-fan-silencer-4-noise-reduction-muffler](https://www.desertcart.fi/products/724974947-ac-infinity-inline-duct-fan-silencer-4-noise-reduction-muffler)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-16*